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Climate Impacts on African Hydropower Climate Impacts on African Hydropower Abstract

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Climate Impacts on African Hydropower Climate Impacts on African Hydropower Abstract Climate Impacts on African Hydropower Climate Impacts on African Hydropower Abstract Abstract Africa is projected to experience increasing climate hazards for the remainder of the 21st century, which are likely to pose a challenge to hydropower generation in Africa. To minimise the adverse effects of climate change, hydropower is needed to enhance Africa’s resilience to climate change. Resilient hydropower can play a key role in allowing Africa to meet the Sustainable Development Goals (SDGs), implement clean energy transitions, and adapt to climate change. This report aims to enhance the climate resilience of African hydropower through a climate risk and impact assessment, and by introducing potential resilience measures. It qualitatively assesses climate risks to African hydropower and examines potential climate impacts quantitatively, comparing two climate scenarios. Based on the assessment, it identifies measures to enhance climate resilience and provides policy recommendations. PAGE | 2 All rights reserved. IEA. Climate Impacts on African Hydropower Acknowledgements Acknowledgements This report was prepared by the Environment and Climate Change (ECC) Unit of the Energy and Environment Division (EED) of the Directorate of Sustainability, Technology and Outlooks (STO). The principal author was Jinsun Lim, with major contributions from Luca Lo Re. Sara Moarif, Head of the Environment and Climate Change Unit, directed this report. Valuable comments and feedback were provided by Mechthild Wörsdörfer, Director of STO, and other colleagues within the IEA, in particular: Maximilian Jarrett, Molly Walton, Lucila Arboleya Sarazola, Peerapat Vithayasrichareon, Craig Hart, Edwin Haesen and Rebecca Gaghen. Janet Pape and Mao Takeuchi provided essential support. Thanks also go the interns of the ECC team, Insa Handschuch and Chiara D’Adamo. Thanks to Astrid Dumond and Therese Walsh of the Communications and Digital Office (CDO) for their roles in producing this report. Barbara Zatlokal edited the report. The analysis relies heavily on the data modelling undertaken by the University of Utrecht. Special thanks go to David Gernaat and Detlef van Vuuren for their support and advice. Many experts from outside the IEA provided input and reviewed a preliminary draft of the report. Muzafalu Kayondo (UEGCL), Fabio Garcia (OLADE), Lisa Danielson (OECD), Roberta Boscolo (WMO), Maria Ubierna, Cristina Diez Santos (IHA), Claire Nicolas, Bente Taraldsten Brunes (World Bank), and James Falzon (EBRD) participated in the peer review. Their comments and suggestions were of great value. The IEA Clean Energy Transitions Programme (CETP), particularly through the contribution of the United Kingdom, supported this analysis. Related resilience work supported by NRCan under the CETP also provided valuable inputs to this report. The individuals and organisations that contributed to this study are not responsible for any opinions or judgements it contains. All errors and omissions are solely the responsibility of the IEA. PAGE | 3 Climate Impacts on African Hydropower Table of contents Table of contents Executive summary ...................................................................................................................... 6 Chapter 1 Introduction ................................................................................................................ 14 Why should we assess climate impacts? ............................................................................... 14 Why should we look at African hydropower? ........................................................................ 14 References ............................................................................................................................... 16 Chapter 2 Climate risks to African hydropower ........................................................................ 17 What is climate risk? ................................................................................................................ 17 More climate hazards during the rest of this century ........................................................... 17 Wider exposure to climate hazards and increasing reliance on hydropower ................... 20 Vulnerability of African hydropower ...................................................................................... 21 References .............................................................................................................................. 22 Chapter 3 Climate impacts on African hydropower ................................................................ 24 What is climate impact? ......................................................................................................... 24 How to assess climate impacts ............................................................................................. 25 Two scenarios: Below 2°C and Around 3°C ......................................................................... 27 Key results of the impact assessment ................................................................................... 28 References .............................................................................................................................. 37 Chapter 4 Measures to enhance the resilience of African hydropower ................................ 40 What is climate resilience? ..................................................................................................... 40 Multiple benefits of enhancing climate resilience ............................................................... 40 Measures to enhance resilience ............................................................................................. 41 Major barriers to implementing resilience measures in Africa ........................................... 44 Policy recommendations for African hydropower ............................................................... 45 References .............................................................................................................................. 49 Annex: Methodology ................................................................................................................... 51 Scope ........................................................................................................................................ 51 Models and data ..................................................................................................................... 52 References .............................................................................................................................. 55 Abbreviations and acronyms ................................................................................................. 57 PAGE | 4 All rights reserved. IEA. Climate Impacts on African Hydropower Table of contents List of figures Average hydropower capacity factor of the selected plants during 2020-99 relative to the baseline period ................................................................................. 7 Comparison of the changes in hydropower capacity factor during 2020-99 relative to the baseline period in both scenarios ................................................... 9 Changes in hydropower capacity factor by African subregion .......................... 10 Comparison of the changes in hydropower capacity factor of the Congo and Zambezi basin and the Nile basin under low and high GHG concentration scenarios .................................................................................................................. 11 Variability of hydropower capacity factors in the Below 2°C and Around 3°C scenarios, 2020-99 .................................................................................................. 12 Share of the selected plants in African hydropower in terms of installed capacity ................................................................................................................... 26 Average hydropower capacity factor of the selected plants during 2020-99 relative to the baseline period ............................................................................... 29 Comparison of the changes in hydropower capacity factor during 2020-99 relative to the baseline period in both scenarios .................................................. 31 Changes in hydropower capacity factor by African subregion .......................... 32 Comparison of the changes in hydropower capacity factor of the Congo and Zambezi basin and the Nile basin under low and high GHG concentration scenarios ................................................................................................................. 34 Variability of hydropower capacity factors in the Below 2°C and Around 3°C scenarios, 2020-99 ................................................................................................. 36 List of boxes Box 3.1 Climate impacts on the energy value chain of electricity system: The case of Cyclone Idai............................................................................................................. 24 Box 4.1 Guidelines, standards and tools for climate resilience of energy systems ........ 46 Box 4.2 Climate resilience financial support initiatives: EBRD’s Climate Resilience Bond .................................................................................................................................. 47 Box 4.3 Capacity-building services for climate resilience: The African Risk Capacity (ARC) Capacity Building
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